CN111427468A - Metal grid structure, touch screen and touch display screen - Google Patents
Metal grid structure, touch screen and touch display screen Download PDFInfo
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- CN111427468A CN111427468A CN201911172177.9A CN201911172177A CN111427468A CN 111427468 A CN111427468 A CN 111427468A CN 201911172177 A CN201911172177 A CN 201911172177A CN 111427468 A CN111427468 A CN 111427468A
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- touch
- sub
- touch electrode
- metal grid
- metal
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 84
- 239000002184 metal Substances 0.000 title claims abstract description 84
- 239000010410 layer Substances 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 6
- 239000012790 adhesive layer Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 10
- 230000003287 optical effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Abstract
The invention relates to the technical field of touch control, and provides a metal grid structure, a touch screen and a touch display screen, wherein the metal grid structure comprises: the touch control device comprises a plurality of metal lines, wherein the metal lines are crossed to form metal grid lines, the metal grid lines are separated by one breaking line to form touch control electrode channels and Dummy blocks which are arranged at intervals, the touch control electrode channels are connected with driving equipment, and the Dummy blocks are not connected with the driving equipment and only have an optical matching effect. The touch electrode channel comprises an edge sub-touch electrode and an in-plane sub-touch electrode. The edge of the edge sub-touch electrode is provided with a connecting line, and the connecting line connects the outer edges of the metal wires of the edge sub-touch electrode in sequence. The width of the edge sub-touch electrode is smaller than that of the in-plane sub-touch electrode. Due to the effect of the connecting lines, the edge sub-touch electrodes and the in-plane sub-touch electrodes can generate similar electrical properties in the aspects of resistance and capacitance, and basic touch performance cannot be influenced.
Description
Technical Field
The invention relates to the technical field of touch control, in particular to the technical field of touch control display, and specifically relates to a metal grid structure, a touch control screen and a touch control display screen.
Background
Currently, the touch display technology industry has emphasized the design of product borders more and more, and strives to compress the borders (i.e., black borders) of touch screens to the greatest extent possible to obtain more market competitive products.
As shown in fig. 1, the current touch display screen includes a touch module 1 and a display module 2, which are bonded together by a bonding layer (not shown), the size of the touch module 1 is slightly larger than that of the display module 2, the edge of the touch module 1 is covered by a black shielding material 3(BM) (mainly shielding an edge metal lead 4), so that the touch module is divided into a display area and a non-display area, the non-display area is covered by the BM, and the display area is not covered by the BM. In actual production, part of the structure of the edge touch electrode 5 of the touch module is generally covered by the BM, so as to satisfy the touch sensing effect of the edge area of the touch screen. At this time, the narrow frame of the touch display screen is not facilitated to be realized.
In order to realize the narrow frame design of the touch screen, most of the touch screens are currently realized from the following two aspects: 1. reducing the line width or the line distance of the metal lead; 2. reducing or decreasing the display area size. However, metal leads are limited by the manufacturing process capability and are generally difficult to further optimize. The conventional OGS touch screen uses Indium Tin Oxide (ITO) to manufacture a touch electrode layer, and the resistivity of the Indium Tin Oxide (ITO) sheet resistor is usually several tens to several hundreds of ohms, so that the touch electrode layer has a large resistance and poor conductivity, and the reduction or decrease of the size of a display area is difficult to meet the requirements of the design of a touch drive IC, thereby increasing more difficulties for the design of the touch drive IC. The narrow frame design of the touch screen can only be realized by reducing the number of touch electrode channels of the touch screen, but the design reduces the basic touch performance of the product.
In order to solve the technical problem that the narrow frame and the touch performance cannot be met at the same time, how to consider the two performances at the same time becomes a subject to be overcome.
Disclosure of Invention
In view of the above-mentioned technical problems,
the technical scheme provided by the invention for solving the technical problem is as follows:
the invention provides a Metal-Mesh (Metal-Mesh) structure, and a touch screen and a touch display screen adopting the Metal-Mesh structure.
The metal grid technology can form a conductive metal grid pattern by using easily available and cheap substances such as metal materials such as silver, copper and the like or oxides and the like as raw materials, and the manufacturing process is simpler than that of a touch electrode layer made of Indium Tin Oxide (ITO), and the required temperature is not more than 150 ℃. The theoretical lowest resistance value can reach 0.1 ohm/square, and the electromagnetic interference shielding effect is good.
The metal mesh structure includes: the touch control device comprises a plurality of metal lines, wherein the metal lines are crossed to form metal grid lines, the metal grid lines are separated by one breaking line to form touch control electrode channels and Dummy blocks which are arranged at intervals, the touch control electrode channels are connected with driving equipment, and the Dummy blocks are not connected with the driving equipment and only have an optical matching effect. The touch electrode channel comprises an edge sub-touch electrode and an in-plane sub-touch electrode. The edge of the edge sub-touch electrode is provided with a connecting line, and the connecting line connects the outer edges of the metal wires of the edge sub-touch electrode in sequence. The width of the edge sub-touch electrode is smaller than that of the in-plane sub-touch electrode. Due to the effect of the connecting lines, the edge sub-touch electrodes and the in-plane sub-touch electrodes can generate similar electrical properties in the aspects of resistance and capacitance, and basic touch performance cannot be influenced.
Meanwhile, because the outer edge part of the edge sub-touch electrode is covered by the BM, the connecting line arranged at the outer edge cannot form obvious visual difference with the metal grid line in the surface, namely the optical difference is already blocked by the BM. Meanwhile, the width of the edge sub-touch electrode is smaller than that of the in-plane sub-touch electrode, so that the width of the edge sub-touch electrode which needs to be shielded by the BM is reduced, and further, the non-display area and the narrow frame effect are reduced.
In a preferred embodiment, the inner sides of the edge sub-touch electrodes may also be provided with connecting lines, and the connecting lines sequentially connect the inner sides of the metal lines of the edge sub-touch electrodes.
In an optional scheme, the metal grid structure of the present invention includes a breakpoint, and the breakpoint is designed on the Dummy block.
In other schemes, a breakpoint is also designed on the touch electrode channel, and the breakpoint is designed on the in-plane sub-touch electrode.
In an optimal technical scheme, the number of break points on the Dummy block is more than that of break points on the in-plane sub-touch electrode.
In other embodiments, the edge sub-touch electrode is also designed with a breakpoint.
In an optimal technical scheme, the number of the break points on the in-plane sub-touch electrode is more than that of the break points on the edge sub-touch electrode.
The invention also provides a touch screen which comprises a substrate, wherein the substrate is provided with a first surface, the first surface is provided with a layer of metal grid structure, one side of the metal grid structure, which is far away from the first surface, is provided with an insulating layer, and the other side of the insulating layer, which is far away from the first surface, is provided with another layer of metal grid structure.
The invention provides a touch display screen which comprises the touch screen and a display screen, wherein a bonding layer is arranged on the display screen, and the touch screen is arranged on one side, far away from the display screen, of the bonding layer.
In other technical solutions, a non-display area of the touch display screen is further provided with a lead and a golden finger, and the lead and the golden finger are used for realizing connection between the touch electrode channel and the touch drive IC.
According to the metal grid structure and the touch screen adopting the metal grid structure, the connecting lines are designed on the edge sub-touch electrodes, so that the narrow frame effect can be further realized on the premise of keeping the touch performance.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic top view of a touch panel of the prior art;
FIG. 2 is a schematic view of a first structure of a first metal grid structure of the present invention;
FIG. 3 is a second schematic view of a first metal grid structure according to the present invention;
FIG. 4 is a schematic view of a third structure of the first metal grid structure of the present invention;
FIG. 5 is a schematic view of a first structure of a second metal grid structure of the present invention;
FIG. 6 is a second structural schematic view of a second metal grid structure of the present invention;
FIG. 7 is a schematic view of a third structure of a second metal grid structure according to the present invention;
FIG. 8 is a schematic cross-sectional view of a touch panel according to the present invention;
fig. 9 is a schematic cross-sectional view of a touch display screen according to the present invention.
Detailed Description
In order to explain the touch screen and the manufacturing method thereof provided by the invention, the following detailed description is made in conjunction with the accompanying drawings of the specification and the text description of the embodiments.
The invention provides a metal grid structure and a touch screen adopting the metal grid structure.
In a specific embodiment, the metal grid structure may be designed as the first metal grid structure 10 or the second metal grid structure 20. The touch screen is formed by overlapping the first metal grid structure 10 and the second metal grid structure 20.
As shown in fig. 2, the first metal grid structure 10 provided in the embodiment of the present invention includes a plurality of metal grid lines formed by intersecting metal lines, the metal grid lines are separated by one breaking line 110, a first touch electrode channel and a first Dummy block 111 are formed in a spaced arrangement, the first touch electrode channel is connected to a driving device, the first Dummy block 111 is not connected to the driving device and has only an optical matching effect, the first touch electrode channel includes first edge sub-touch electrodes 113 located at two sides and first in-plane sub-touch electrodes 112 (in an actual product, there are a plurality of first in-plane sub-touch electrodes 112 spaced by the first Dummy block 111), at least one of two first edge sub-touch electrodes 113 at two sides is provided with a first connecting line 1101, and the first connecting line L1 of the first edge sub-touch electrodes 113 provided with the first connecting line is smaller than a width of the first in-plane sub-touch electrodes L2.
In a specific embodiment, the width L1 of the first edge sub-touch electrode 113 provided with the first connection line 1101 is less than two-thirds of the width L2 of the first in-plane sub-touch electrode 112.
In other embodiments, the width L1 of the first edge sub-touch electrode 113 provided with the first connection line 1101 is less than one-half or one-third of the width L2 of the first in-plane sub-touch electrode 112.
In a specific embodiment, the width L2 of the first in-plane sub-touch electrode 112 is 1-5 mm.
In this embodiment, the break line 110 is a straight line, and in other embodiments, the break line 110 may also be a broken line or a curved line as long as the first touch electrode channel can be electrically isolated from the first Dummy block 111.
As shown in fig. 3, in another embodiment, a second connection line 1102 may be disposed inside at least one of the first edge sub-touch electrodes 113, and the second connection line 1102 connects the insides of the metal lines of the first edge sub-touch electrodes 113 in sequence.
In this embodiment, the first connection line 1101 or the second connection line 1102 is a straight line, and in other embodiments, the first connection line 1101 or the second connection line 1102 may also be a broken line or a curved line as long as the outer edges or the inner sides of the metal lines of the first edge sub-touch electrodes 113 can be connected in sequence.
As shown in fig. 4, the first metal grid structure 10 of the present invention includes a breakpoint 1100, and the breakpoint 1100 is designed on the first Dummy block 111.
In other embodiments, the first touch electrode channel is also designed with a break point 1100, and the break point 1100 is designed on the first in-plane sub-touch electrode 112.
In a preferred embodiment, the number of the break points 1100 on the first Dummy block 111 is greater than the number of the break points 1100 on the first in-plane sub-touch electrode 112.
In other embodiments, the first edge sub-touch electrode 113 is also designed with a break point 1100.
In a preferred embodiment, the number of the break points 1100 on the first in-plane sub-touch electrode 112 is greater than the number of the break points 1100 on the first edge sub-touch electrode 113.
As shown in fig. 5, the second metal grid structure 20 provided by the embodiment of the invention includes a plurality of metal grid lines formed by intersecting metal lines, the metal grid lines are separated by one breaking line 110 to form second touch electrode channels and second Dummy blocks 211 arranged at intervals, the second touch electrode channels are connected to a driving device, the second Dummy blocks 211 are not connected to the driving device and have only an optical matching effect, the second touch electrode channels include second edge sub-touch electrodes 213 located at two sides and second in-plane sub-touch electrodes 212, at least one of the edges of the second edge sub-touch electrodes 213 is provided with a third connection line 1103, the third connection line 1103 sequentially connects outer edges of the metal lines of the second edge sub-touch electrodes 213, and a width L3 of the second edge sub-touch electrodes 213 provided with the third connection line 1103 is smaller than a width L4 of the second in-plane sub-touch electrodes 212.
In a specific embodiment, the width L3 of the second edge sub-touch electrode 213 provided with the third connection line 1103 is less than two-thirds of the width L4 of the second in-plane sub-touch electrode 212;
in other embodiments, the width L3 of the second edge sub-touch electrode 213 with the third connection line 1103 is less than one-half or one-third of the width L4 of the second in-plane sub-touch electrode 212.
In a specific embodiment, the width L4 of the second on-side sub-touch electrode 212 is 1-5 mm.
In this embodiment, the break line 110 is a straight line, and in other embodiments, the break line 110 may also be a broken line or a curved line as long as the second touch electrode channel can be electrically isolated from the second Dummy block 211.
As shown in fig. 6, in another embodiment, a fourth connection line 1104 may be disposed inside the second edge sub-touch electrode 213, and the fourth connection line 1104 connects the inner sides of the metal lines of the second edge sub-touch electrode 213 in sequence.
In this embodiment, the third connecting lines 1103 or the fourth connecting lines 1104 are straight lines, and in other embodiments, the third connecting lines 1103 or the fourth connecting lines 1104 may also be broken lines or curved lines as long as the outer edges or the inner sides of the metal lines of the second edge sub-touch electrodes 213 can be connected in sequence.
As shown in fig. 7, the metal grid structure of the present invention includes a breakpoint 1100, and the breakpoint 1100 is designed on the second Dummy block 211.
In other embodiments, the second touch electrode channel is also designed with a break point 1100, and the break point 1100 is designed on the second in-plane sub-touch electrode 212.
In a preferred embodiment, the number of the break points 1100 on the second Dummy block 211 is greater than the number of the break points 1100 on the second in-plane sub-touch electrode 212.
In other embodiments, the second edge sub-touch electrode 213 is also designed with a break point 1100.
In a preferred embodiment, the number of the break points 1100 on the second in-plane sub-touch electrode 212 is greater than the number of the break points 1100 on the second edge sub-touch electrode 213.
As shown in fig. 8, the present invention further provides a touch panel, which includes a substrate 30, the substrate 30 has a first surface 300, a first metal mesh structure 10 is disposed on the first surface 300, an insulating layer 40 is disposed on a side of the first metal mesh structure 10 away from the first surface 300, and a second metal mesh structure 20 is disposed on a side of the insulating layer 40 away from the first surface 300.
In other embodiments, the second mesh structure 20 in the touch screen may also be replaced by other common metal mesh structures, that is, the edge sub-touch electrodes of the metal mesh structures may not be designed with the connecting lines or the break points 1100.
As shown in fig. 9, the present invention provides a touch display screen, which includes the above touch screen, and further includes a display screen 50, wherein an adhesive layer 60 is disposed on the display screen 50, and the touch screen is disposed on a side of the adhesive layer 60 away from the display screen 50.
In other technical solutions, a non-display area of the touch display screen is further provided with a lead and a golden finger, and the lead and the golden finger are used for realizing connection between the touch electrode channel and the touch drive IC.
The metal mesh structure, the touch screen and the touch display screen using the metal mesh provided above are preferred embodiments, and should not be construed as limiting the scope of the present invention, and those skilled in the art should understand that various modifications or substitutions may be made without departing from the spirit of the present invention, and all modifications or substitutions should be considered to be within the scope of the present invention, that is, the scope of the present invention should be determined by the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
Claims (10)
1. A metal grid structure comprising: the touch screen display panel comprises metal grid lines formed by crossing a plurality of metal lines, wherein the metal grid lines are separated by one breaking line (110) to form first touch electrode channels and first Dummy blocks (111) which are arranged at intervals, the first touch electrode channels are connected with a driving device, and the first Dummy blocks (111) are not connected with the driving device;
the first touch electrode channel comprises first edge sub-touch electrodes (113) located on two sides and first in-plane sub-touch electrodes (112) located in a plane, wherein a first connecting line (1101) is arranged at the edge of at least one of the first edge sub-touch electrodes (113), the first connecting line (1101) sequentially connects the outer edges of metal wires of the first edge sub-touch electrodes (113), and the width L1 of the first edge sub-touch electrode (113) provided with the first connecting line (1101) is smaller than the width L2 of the first in-plane sub-touch electrode (112).
2. The metal grid structure of claim 1, wherein a width L1 of the first edge sub-touch electrode (113) provided with a first connection line (1101) is less than two-thirds of a width L2 of the first in-plane sub-touch electrode (112).
3. The metal grid structure of claim 1, wherein at least one of the first edge sub-touch electrodes (113) is also provided with a second connection line (1102) on the inner side thereof, and the second connection line (1102) connects the inner sides of the metal lines of the first edge sub-touch electrodes (113) in sequence.
4. The metal grid structure according to claim 1, characterized in that the first connection lines (1101) or the second connection lines (1102) are straight lines.
5. The metal grid structure according to claim 1, characterized in that it further comprises a break point (1100), said break point (1100) being designed on said first Dummy block (111).
6. The metal grid structure of claim 5, wherein a break point (1100) is also designed on the first touch electrode channel, the break point (1100) being designed on the first in-plane sub-touch electrode (112);
the number of break points (1100) on the first Dummy block (111) is greater than the number of break points (1100) on the first in-plane sub-touch electrode (112).
7. The metal mesh structure as claimed in claim 6, wherein the first edge sub-touch electrode (113) is also designed with break points (1100), and the number of break points (1100) on the first in-plane sub-touch electrode (112) is greater than the number of break points (1100) on the first edge sub-touch electrode (113).
8. A touch screen comprising a substrate (30), said substrate (30) having a first surface (300), characterized in that a metal grid structure according to one of claims 1-8 is provided on said first surface (300), an insulating layer (40) is provided on said metal grid structure on the side remote from said first surface (300), and a second metal grid structure (20) is provided on said insulating layer (40) on the side remote from said first surface (300).
9. Touch screen according to claim 8, the second metal grid structure (20) comprising: the metal grid lines are formed by intersecting a plurality of metal lines, the metal grid lines are separated by one breaking line (110), second touch electrode channels and second Dummy blocks (211) are formed in an interval arrangement, the second touch electrode channels are connected with driving equipment, and the second touch electrode channels comprise second edge sub-touch electrodes (213) positioned on two sides and second in-plane sub-touch electrodes (212) positioned in a plane;
the touch panel is characterized in that a third connecting line 1103(1103) is arranged at the edge of at least one of the second edge sub-touch electrodes (213), the third connecting line 1103(1103) connects the outer edges of the metal wires of the second edge sub-touch electrodes (213) in sequence, and the width L3 of the second edge sub-touch electrodes (213) provided with the third connecting line 1103(1103) is smaller than the width L4 of the second in-plane sub-touch electrodes (212).
10. A touch display screen, comprising the touch screen of claim 8 or 9, and further comprising a display screen (50), wherein the display screen (50) is provided with an adhesive layer (60), and the touch screen is provided on a side of the adhesive layer (60) away from the display screen (50).
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CN201911172177.9A CN111427468A (en) | 2019-11-26 | 2019-11-26 | Metal grid structure, touch screen and touch display screen |
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CN201911172177.9A CN111427468A (en) | 2019-11-26 | 2019-11-26 | Metal grid structure, touch screen and touch display screen |
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CN114489376A (en) * | 2021-12-29 | 2022-05-13 | 重庆莱宝科技有限公司 | Touch screen |
WO2022178817A1 (en) * | 2021-02-26 | 2022-09-01 | 京东方科技集团股份有限公司 | Touch-control structure, touch-control display panel and display apparatus |
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